893 static struct uvc_control *uvc_find_control(struct uvc_video_chain *chain,  in uvc_find_control()  argument
906 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_find_control()
919 static int uvc_ctrl_populate_cache(struct uvc_video_chain *chain,  in uvc_ctrl_populate_cache()  argument
925 		ret = uvc_query_ctrl(chain->dev, UVC_GET_DEF, ctrl->entity->id,  in uvc_ctrl_populate_cache()
926 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
934 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MIN, ctrl->entity->id,  in uvc_ctrl_populate_cache()
935 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
942 		ret = uvc_query_ctrl(chain->dev, UVC_GET_MAX, ctrl->entity->id,  in uvc_ctrl_populate_cache()
943 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
950 		ret = uvc_query_ctrl(chain->dev, UVC_GET_RES, ctrl->entity->id,  in uvc_ctrl_populate_cache()
951 				     chain->dev->intfnum, ctrl->info.selector,  in uvc_ctrl_populate_cache()
963 			uvc_warn_once(chain->dev, UVC_WARN_XU_GET_RES,  in uvc_ctrl_populate_cache()
995 static int __uvc_ctrl_get(struct uvc_video_chain *chain,  in __uvc_ctrl_get()  argument
1005 		ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR, ctrl->entity->id,  in __uvc_ctrl_get()
1006 				chain->dev->intfnum, ctrl->info.selector,  in __uvc_ctrl_get()
1021 static int __uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in __uvc_query_v4l2_ctrl()  argument
1047 		int ret = __uvc_ctrl_get(chain, master_ctrl, master_map, &val);  in __uvc_query_v4l2_ctrl()
1056 		int ret = uvc_ctrl_populate_cache(chain, ctrl);  in __uvc_query_v4l2_ctrl()
1113 int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,  in uvc_query_v4l2_ctrl()  argument
1120 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1124 	ctrl = uvc_find_control(chain, v4l2_ctrl->id, &mapping);  in uvc_query_v4l2_ctrl()
1130 	ret = __uvc_query_v4l2_ctrl(chain, ctrl, mapping, v4l2_ctrl);  in uvc_query_v4l2_ctrl()
1132 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_ctrl()
1145 int uvc_query_v4l2_menu(struct uvc_video_chain *chain,  in uvc_query_v4l2_menu()  argument
1159 	ret = mutex_lock_interruptible(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1163 	ctrl = uvc_find_control(chain, query_menu->id, &mapping);  in uvc_query_v4l2_menu()
1181 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_query_v4l2_menu()
1197 	mutex_unlock(&chain->ctrl_mutex);  in uvc_query_v4l2_menu()
1205 static void uvc_ctrl_fill_event(struct uvc_video_chain *chain,  in uvc_ctrl_fill_event()  argument
1213 	__uvc_query_v4l2_ctrl(chain, ctrl, mapping, &v4l2_ctrl);  in uvc_ctrl_fill_event()
1235 static void uvc_ctrl_send_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_event()  argument
1246 	uvc_ctrl_fill_event(chain, &ev, ctrl, mapping, value, changes);  in uvc_ctrl_send_event()
1261 static void uvc_ctrl_send_slave_event(struct uvc_video_chain *chain,  in uvc_ctrl_send_slave_event()  argument
1273 	if (__uvc_ctrl_get(chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_send_slave_event()
1276 	uvc_ctrl_send_event(chain, handle, ctrl, mapping, val, changes);  in uvc_ctrl_send_slave_event()
1284 	struct uvc_video_chain *chain = w->chain;  in uvc_ctrl_status_event_work()  local
1291 	mutex_lock(&chain->ctrl_mutex);  in uvc_ctrl_status_event_work()
1307 			uvc_ctrl_send_slave_event(chain, handle, ctrl,  in uvc_ctrl_status_event_work()
1311 		uvc_ctrl_send_event(chain, handle, ctrl, mapping, value,  in uvc_ctrl_status_event_work()
1315 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_status_event_work()
1325 bool uvc_ctrl_status_event(struct urb *urb, struct uvc_video_chain *chain,  in uvc_ctrl_status_event()  argument
1328 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_status_event()
1338 	w->chain = chain;  in uvc_ctrl_status_event()
1369 		ctrl = uvc_find_control(handle->chain, xctrls[i].id, &mapping);  in uvc_ctrl_send_events()
1389 			uvc_ctrl_send_slave_event(handle->chain, handle, ctrl,  in uvc_ctrl_send_events()
1402 		uvc_ctrl_send_event(handle->chain, handle, ctrl, mapping,  in uvc_ctrl_send_events()
1414 	ret = mutex_lock_interruptible(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1418 	ctrl = uvc_find_control(handle->chain, sev->id, &mapping);  in uvc_ctrl_add_event()
1430 		if (__uvc_ctrl_get(handle->chain, ctrl, mapping, &val) == 0)  in uvc_ctrl_add_event()
1433 		uvc_ctrl_fill_event(handle->chain, &ev, ctrl, mapping, val,  in uvc_ctrl_add_event()
1442 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_add_event()
1450 	mutex_lock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1452 	mutex_unlock(&handle->chain->ctrl_mutex);  in uvc_ctrl_del_event()
1486 int uvc_ctrl_begin(struct uvc_video_chain *chain)  in uvc_ctrl_begin()  argument
1488 	return mutex_lock_interruptible(&chain->ctrl_mutex) ? -ERESTARTSYS : 0;  in uvc_ctrl_begin()
1545 	struct uvc_video_chain *chain = handle->chain;  in __uvc_ctrl_commit()  local
1550 	list_for_each_entry(entity, &chain->entities, chain) {  in __uvc_ctrl_commit()
1551 		ret = uvc_ctrl_commit_entity(chain->dev, entity, rollback);  in __uvc_ctrl_commit()
1559 	mutex_unlock(&chain->ctrl_mutex);  in __uvc_ctrl_commit()
1563 int uvc_ctrl_get(struct uvc_video_chain *chain,  in uvc_ctrl_get()  argument
1569 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_get()
1573 	return __uvc_ctrl_get(chain, ctrl, mapping, &xctrl->value);  in uvc_ctrl_get()
1579 	struct uvc_video_chain *chain = handle->chain;  in uvc_ctrl_set()  local
1588 	ctrl = uvc_find_control(chain, xctrl->id, &mapping);  in uvc_ctrl_set()
1598 			ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1637 				ret = uvc_ctrl_populate_cache(chain, ctrl);  in uvc_ctrl_set()
1664 			ret = uvc_query_ctrl(chain->dev, UVC_GET_CUR,  in uvc_ctrl_set()
1665 				ctrl->entity->id, chain->dev->intfnum,  in uvc_ctrl_set()
1847 int uvc_xu_ctrl_query(struct uvc_video_chain *chain,  in uvc_xu_ctrl_query()  argument
1859 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_xu_ctrl_query()
1886 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_xu_ctrl_query()
1889 	ret = uvc_ctrl_init_xu_ctrl(chain->dev, ctrl);  in uvc_xu_ctrl_query()
1951 	ret = uvc_query_ctrl(chain->dev, xqry->query, xqry->unit,  in uvc_xu_ctrl_query()
1952 			     chain->dev->intfnum, xqry->selector, data, size);  in uvc_xu_ctrl_query()
1961 	mutex_unlock(&chain->ctrl_mutex);  in uvc_xu_ctrl_query()
2090 int uvc_ctrl_add_mapping(struct uvc_video_chain *chain,  in uvc_ctrl_add_mapping()  argument
2093 	struct uvc_device *dev = chain->dev;  in uvc_ctrl_add_mapping()
2108 	list_for_each_entry(entity, &chain->entities, chain) {  in uvc_ctrl_add_mapping()
2129 	if (mutex_lock_interruptible(&chain->ctrl_mutex))  in uvc_ctrl_add_mapping()
2171 	mutex_unlock(&chain->ctrl_mutex);  in uvc_ctrl_add_mapping()